One part heat curable organopolysiloxane compositions

Abstract

Shelf stable heat curable mixtures of vinyl substituted organopolysiloxane fluid and siloxane hydride are provided. The one part polyorganosiloxane mixtures are catalyzed with an inclusion compound of a cyclodextrin and a complex of a cyclopentadiene, 1,5-cyclooctadiene or norbornadiene and a platinum group metal material, such as a C(1-4) alkyl substituted platinum or a rhodium halide.

What is claimed is: 
     
       1. A one part heat curable organopolysiloxane composition comprising by weight, (A) 100 parts of a vinyl substituted organopolysiloxane fluid,   (B) 1 to 20 parts of a siloxane hydride and,   (C) an effective amount of an inclusion compound of a cyclodextrin and a complex of a rhodium halide and a ligand.   
     
     
       2. A one part heat curable organopolysiloxane composition in accordance with claim 1, utilizing an effective amount of an inclusion compound of a β-cyclodextrin and a complex of a ligand selected from the class consisting of cyclopentadiene, 1,5-cyclooctadiene and norbornadiene and a rhodium halide. 
     
     
       3. A one part heat curable organopolysiloxane composition in accordance with claim 1, where the vinyl substituted organopolysiloxane fluid is a vinyl substituted polydimethylsiloxane fluid. 
     
     
       4. A one part heat curable organopolysiloxane composition in accordance with claim 1, where the siloxane hydride is a methylsiloxane hydride fluid. 
     
     
       5. A one part heat curable organopolysiloxane composition in accordance with claim 1, which is reinforced with a filter. 
     
     
       6. A one part heat curable organopolysiloxane composition in accordance with claim 1, where the cyclodextrin is β-cyclodextrin. 
     
     
       7. A one part heat curable organopolysiloxane composition in accordance with claim 1, where the rhodium halide is a rhodium chloride.